Effect of vanadium microalloying on hydrogen embrittlement susceptibility of medium Mn based hot stamping steel

Liu Hao; Wang Zhen; Zhang Shiqi; Ge Rui; Jia Juan; Liu Jing

doi:10.7513/j.issn.1004-7638.2024.03.023

Volume 45 Issue 3

Jul. 2024

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Liu Hao, Wang Zhen, Zhang Shiqi, Ge Rui, Jia Juan, Liu Jing. Effect of vanadium microalloying on hydrogen embrittlement susceptibility of medium Mn based hot stamping steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(3): 169-175. doi: 10.7513/j.issn.1004-7638.2024.03.023

Citation:

Liu Hao, Wang Zhen, Zhang Shiqi, Ge Rui, Jia Juan, Liu Jing. Effect of vanadium microalloying on hydrogen embrittlement susceptibility of medium Mn based hot stamping steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(3): 169-175. doi: 10.7513/j.issn.1004-7638.2024.03.023

Citation:

Liu Hao, Wang Zhen, Zhang Shiqi, Ge Rui, Jia Juan, Liu Jing. Effect of vanadium microalloying on hydrogen embrittlement susceptibility of medium Mn based hot stamping steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(3): 169-175. doi: 10.7513/j.issn.1004-7638.2024.03.023

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Effect of vanadium microalloying on hydrogen embrittlement susceptibility of medium Mn based hot stamping steel

doi: 10.7513/j.issn.1004-7638.2024.03.023

Liu Hao^{1, 2
,},
Wang Zhen^{1, 2},
Zhang Shiqi^{1, 2},
Ge Rui^{1, 2},
Jia Juan^{1, 2},
Liu Jing^{1, 2, 3
,
,}

1.
Wuhan University of Science and Technology, The State Key Laboratory of Refractories and Metallurgy,Wuhan 430081, Hubei, China
2.
Hubei Engineering Technology Research Center of Marine Materials and Service Safety, Wuhan 430081, Hubei, China
3.
College of Materials Science and Engineering, Shenzhen University, Shenzhen 518000, Guangdong, China

More Information

Received Date: 2023-03-21
Publish Date: 2024-07-02

Abstract

Abstract

The effect of adding 0.12% vanadium on hydrogen embrittlement susceptibility of medium Mn based hot stamping steel was studied by using slow strain rate tensile, hydrogen permeability and hydrogen microprinting experiments, combined with SEM, TEM, and EBSD analysis. The results show that vanadium microalloying on hydrogen embrittlement susceptibility has double effects. On the one hand, vanadium not only significantly refines grains and precipitates a large number of nano-scale vanadium-containing carbides in steel, which greatly increases the hydrogen trap density and effectively inhibites hydrogen enrichment to the ferrite/martensite interface. Moreover, the addition of vanadium reducing the long strip-shaped ferrite and increasing the proportion of small angle grain boundaries can further restrain the continuous crack propagation and decrease the hydrogen embrittlement susceptibility. But on the other hand, vanadium increases the martensite content, which increases the risk of hydrogen embrittlement to a certain extent. Under conventional hot forming process, the beneficial effect of vanadium microalloying is more significant, which makes the test steel containing vanadium has better hydrogen embrittlement resistance.
- medium Mn hot stamping steel,
- vanadium microalloying,
- hydrogen embrittlement susceptibility,
- hydrogen diffusion

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References(15)

References

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